How many odd numbers with distinct digits can be created using the digits?
Since we can't know what numbers have been used, in the tens, hundreds and thousands we start counting at the ones. Show
So then we arrive at the following: 5 * 9 * 8 * 6 = 2160 possibilities. I thought this was pretty straight forward. Than I had a glimpse at the solution sheet... And lo an answer which really doesn't make much sense at its first glimpse.
Why are the 0's treated special? The exercise states it should be an odd number, with distinct digits. I thought I adhered to that proposition.... The question is from Permutation and Combination. Another question which combines number theory with combinatorics. Our task is to find how many odd numbers can be formed under the given conditions . This section hosts a number of questions which are on par with CAT questions in difficulty on CAT Permutation and Combination, and CAT Probability. Question 12: How many odd numbers with distinct digits can be created using the digits 1, 2, 3, 4, 5 and 6? 🎉 Happy New Year 2023!Fabulous 4,000 off on CAT Online CoursesValid until 3rd Jan2IIM : Best Online CAT Coaching.Video ExplanationBest CAT Coaching in ChennaiCAT Coaching in Chennai - CAT 2022 |